Finding the Fourth Proportional to 2,758.56, 4,137.96 and 909.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,758.56 : 4,137.96 = 909.83 : x
2. Step 2: Convert to fraction form
   2,758.56/4,137.96 = 909.83/x
3. Step 3: Cross multiply
   2,758.56x = 4,137.96 × 909.83
4. Step 4: Simplify right side
   2,758.56x = 3,764,851.34
5. Step 5: Solve for x
   x = 3,764,851.34/2,758.56
6. Step 6: Final answer
   x = 1,364.79